The Financial Permeability - S2-E14
Continuity mistake: When the guys are using the whiteboard to figure out their cinema plans, Sheldon draws two black X's on the board with a marker. In the following shots the appearance of the X's changes. (00:00:30)
Continuity mistake: During the car chase, the NSA's black SUV rams into Chuck's little car. The front license plate breaks off and is hanging on by one corner. When it's backing down the stairs, the plate has somehow reattached itself perfectly to the bumper. (00:29:20)
Continuity mistake: Spencer arrives at his destination with butter on his elbow but it disappears a few moments later.
Revealing mistake: When "Alice" drinks the potion and hands it to Nostalgia Critic who also then drinks it, the cap on the bottle is still on it. (00:01:20)
Burple Nurples/Shnitzel Makes a Deposit - S1-E2
Continuity mistake: In "Burple Nurples", Chowder is showing Gorgonzola the Burple Nurples, and there are houses and shops not too far behind Gorgonzola. Later, the camera zooms out, and the buildings are missing.
Episode #1.1 - S1-E1
Continuity mistake: In the scene where Geoff is talking to Donald at the pool bar, just before Geoff swims off, a waiter appears from behind the bush in the background. In the next shot when Geoff swims off, the waiter should still be in shot, but has vanished. (00:14:40)
Got Game?/Comet Kermilian - S1-E30
Continuity mistake: Candace is wearing a white crop-top and dark blue jeans in this episode, but when she goes to get ice-cream and because of Suzy falls into the cart, the cart begins moving and crashes into the tree. When Candace raises her head and upper torso out of the cart for a brief moment, she is wearing her usual red dress. But in the next shot, however, she is wearing her white crop-top and dark jeans again.